Cooling System Specifications: Maintenance
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 1986 Chevrolet Nova, 1986 Chevrolet Monte Carlo, 1986 Chevrolet El Camino, 1986 Chevrolet Corvette, and 1986 Chevrolet Chevette. However, it is still accessible from the selected car via links, so may be relevant.
Inspect cooling system every 12 months or 15,000 miles. Drain and flush cooling system every 24 months or 30,000 miles. Maintain a 50% mixture of ethylene glycol anti-freeze and water.
NOTE:
Rusty appearing coolant is an indication that coolant has become ineffective. System should be flushed and new coolant added to radiator.